We are having trouble configuring an ISAPI Filter application to run in IIS 7 without prompting for a Windows user login. It works without that prompt here on our clean lab W2K8 Standard server.
I have a clean W2K8 Standard server setup in my lab that does not require login. When I run the same configuration script (using appcmd) on a supposedly identical customer server, it always prompts for a Windows user login.
We have enabled Anonymous Authentication at the web site and ISAPI filter virtual directory level and do not require SSL (at this time). The W3WP and the application pool are running under the Network Service account and it has all rights to the c:\inetpub\wwwroot and ISAPI filter DLL folders and associated registry keys.
I am unable to find any difference in the setup on the customer server.
Any ideas on where or what to look for would be greatly appreciated.